Hmm...
4 gauge power cable (the largest wire in the kit) will connect directly to the positive post of the car's battery. From there you'll run the cable into the car through the firewall using an existing hole or drill one and then to wherever in the car (or trunk) the amp will be mounted. Connect this to the '+' power input on the amp.
Using the smaller ground cable (probably black) find somewhere near the amp to ground it. (connection needs to be connected to bare metal somewhere for best results - scrape paint away if need be)
Connect the line out converter (looks something like this one:
) following the instructions that come with it.
Route your RCA cables from the output side of the LOC to the amplifier.
Like I mentioned previously you'll need to find a switched power source to connect to the amp's remote turn-on circuit (this is what tells the amp to turn on and off) You can connect this to the ignition circuit or any other circuit that only has power when the key is turned on so the amp isn't constantly on. If you're feeling a bit more adventurous (seeing as you're a self-prclaimed novice at this) you can wire an inline switch turn the amp on and off yourself. The previous method is the least labor intensive if you're not feeling bold.
Make sure the amp is grounded good (see the stickied tutorials in the wiring section - heaps of great info there...if you have access to a digital multimeter grab it...it'll come in handy)
Bridging the amp is a matter of connecting the positive lead to the subs to the positive output from left channel of the amp. Then connect the negative lead to the subs to the negative output on the right channel of the amp. Some amps have a switch that needs to be in the right place to run in bridged mode...others automatically select that mode when it's connected that way. I'm not familiar with that specific Fosgate unit so look through the owner's/installation manual thoroughly to be sure of which case it is for you.
Hope this helps somewhat!